“I knew none of the circumstances which drove you to this dreadful business, Mr. Bennett,” he said gently. “To me you are an officer of the law—no more and no less terrible than I, who have helped send many men to the scaffold. No more unclean than the judge who sentences them and signs the warrant for their death. We are instruments of Order.” Ella and her father stayed that night at Harley Terrace, and in the morning drove down to Paddington Station to meet the boy. Neither Dick nor Elk accompanied them. “There are two things which strike me as remarkable,” said Elk. “One is, that neither you nor I recognized Bennett.” “Why should we?” asked Dick. “Neither you nor I attend executions, and the identity of the hangman has always been more or less unknown except to a very few people. If he cares to advertise himself, he is known. Bennett shrank from publicity, avoided even the stations of the towns where the executions took place, and usually alighted at some wayside village and tramped into the town on foot. The chief warder at Gloucester told me that he never arrived at the gaol until midnight before an execution. Nobody saw him come or go.” “Old man Maitland must have recognized him.” “He did,” nodded Dick. “At some period Maitland was in gaol, and it is possible for prisoners, especially privileged prisoners, to catch a glimpse of the hangman. By ‘privileged prisoners’ I mean men who, by reason of their good conduct, were allowed to move about the gaol freely. Maitland told Miss Bennett that he had been in ‘quod,’ and I am certain that that is the true explanation. All Bennett’s official letters came to him at Dorking, where he rented a room for years. His mysterious journeys to town were not mysterious to the people of Dorking, who did not know him by sight or name.” To Elk’s surprise, when he came back to Harley Terrace, Dick was not there. His servant said that his master had had a short sleep, had dressed and gone out, and had left no message as to where he was going. Dick did not, as a rule, go out on these solitary expeditions, and Elk’s first thought was that he had gone to Horsham. He ate his dinner, and thought longingly of his comfortable bed. He did not wish to retire for the night until he had seen his chief. He made himself comfortable in the study, and was fast asleep, when somebody shook him gently by the shoulder. He looked up and saw Dick. “Hullo!” he said sleepily. “Are you staying up all night?” “I’ve got the car at the door,” said Dick. “Get your top-coat. We’re going to Horsham.” Elk yawned at the clock. “She’ll be thinking of bed,” he protested. “I hope so,” said Dick, “but I have my fears. Frog was seen on the Horsham Road at nine o’clock to-night.” “How do you know?” asked Elk, now wide awake. “I’ve been shadowing him all the evening,” said Dick, “but he slipped me.” “You’ve been watching Frog?” repeated Elk slowly. “Do you know him?”